Locking and Unlocking Tracks
Lock icon
To lock tracks:
1.  Select the tracks you want to lock (source, record, or both) by clicking to select each in turn.
2.  Do one of the following:
  Right-click (Windows) or Ctrl+Shift+click (Macintosh) in the Timeline, and select Lock Tracks.
  Select Clip > Lock Tracks.
The Lock icon indicates that the selected tracks are locked; no further editing can occur on locked tracks.
To unlock tracks:
1.  Select the tracks you want to unlock.
2.  Do one of the following:
  Right-click (Windows) or Ctrl+Shift+click (Macintosh) in the Timeline, and select Unlock Tracks.
  Select Clip > Unlock Tracks.
The Lock icon disappears and the tracks are unlocked.

Some features described in Help are available only in Avid Xpress Pro or Avid Xpress DV. For more information about Avid Free DV go to
www.avid.com.